典型结构单轴和三轴振动响应对比研究
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摘要
目的研究单轴振动与三轴振动对典型结构振动响应的不同影响。方法通过单轴振动及三轴振动的对比实验,以典型结构悬臂梁为研究对象,利用加速度响应测量法及动应变测量法,从不同角度研究单轴振动和三轴振动对试品造成的不同影响。结果相比于单轴振动,在三轴振动下试品谐振点发生改变的同时,谐振峰响应也更为明显。另外,由于三轴同振叠加耦合作用的影响,三轴振动下试品的响应量级也略大于单轴振动。结论单轴振动与三轴振动对试品会产生不同的考核效果。
Objective To evaluate influences of single-axis vibration test and three-axis vibration test on vibration response of typical structure.Methods Through comparing the single-axis vibration test and the three-axis vibration test to the cantilever beam,influences of single-axis vibration and three-axis vibration on specimen from different perspectives were researched with acceleration response and dynamic strain.Results Compared with the single-axis vibration,the three-axis vibration changed the resonance frequency and the amplitude of the beam obviously.In addition,due to the cumulative vibration in three axes,the beam showed more resonance level than in single-axis vibration.Conclusion Single-axis vibration and three-axis vibration have different influences on the specimen.
Objective To evaluate influences of single-axis vibration test and three-axis vibration test on vibration response of typical structure.Methods Through comparing the single-axis vibration test and the three-axis vibration test to the cantilever beam,influences of single-axis vibration and three-axis vibration on specimen from different perspectives were researched with acceleration response and dynamic strain.Results Compared with the single-axis vibration,the three-axis vibration changed the resonance frequency and the amplitude of the beam obviously.In addition,due to the cumulative vibration in three axes,the beam showed more resonance level than in single-axis vibration.Conclusion Single-axis vibration and three-axis vibration have different influences on the specimen.
引文
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[2]张殿坤,邱杰,王建军.多维振动环境实验技术及应用[J].战术导弹技术,2008(2):34-37.
[3]陈颖,朱长春,李春枝,等.某结构的多轴随机振动试验研究[J].实验力学,2009,24(1):35-41.
[4]陈颖,朱长春,李春枝.典型结构在单多轴随机振动下的动力学特性对比研究[J].振动工程学报,2009,22(4):386-390.
[5]赵保平,王刚,高贵福.多输入多输出振动实验应用综述[J].装备环境工程,2006,3(3):25-32.
[6]胡亚兵,苏华昌,张鹏飞.典型结构单轴与三轴振动损伤特性探讨[J].导弹与航天运载技术,2015(3):74-78.
[7]王晓飞,王刚,高贵福.一种系统级多维振动试验技术[J].航天器环境工程,2014,31(5):516-521.
[8]农绍宁,田光明,赵怀耘.多维激励下结构随机振动响应分析[J].装备环境工程,2013,10(2):124-128.
[9]贺光宗,陈怀海,贺旭东.多轴随机振动下结构疲劳失效的判定方法[J].振动?测试与诊断,2015,35(3):448-452.
[10]周兴广.多轴随机振动环境的疲劳损伤机理浅析[J].航天器环境工程,2010,27(6):723-726.
[11]邱吉保,张正平,李海波,等.全尺寸航天器振动台多维振动试验的天地一致性研究(上)[J].强度与环境,2015,42(1):1-11.
[12]邱吉保,张正平,李海波,等.全尺寸航天器振动台多维振动试验的天地一致性研究(下)[J].强度与环境,2015,42(2):1-12.